Database Users

Battery 6-8hrs on NAND even standby

Was running NexusHD2-Gingerbread_V2.3_NAND_(Android-2.3.2) for last two months.. in standby I wouldn't get more than six hours really. Drove me nuts. I've just upgraded to NexusHD2-Gingerbread_V2.6_NAND_(Android-2.3.3)_update . Is there anything I have to do to get better battery life?
Some app that'll turn off wifi? (i have no wifi at work but would like it on at home, any suggestions?)
Should I be upgrading the SD card to some other type?
I never used battery monitoring tools until today. I've installed 'current widget' and it shows 4-6ma of usage when sleeping.
Battery E.T.A. app shows 10hrs of life .. is this normal?
I'm almost at the point of selling this phone because of the insanely short battery life..

no it isn't normal...with 4mA drain it must have to keep at least 2 days in standby...buy a new battery

Ravi Shanghavi said:
Was running NexusHD2-Gingerbread_V2.3_NAND_(Android-2.3.2) for last two months.. in standby I wouldn't get more than six hours really. Drove me nuts. I've just upgraded to NexusHD2-Gingerbread_V2.6_NAND_(Android-2.3.3)_update . Is there anything I have to do to get better battery life?
Some app that'll turn off wifi? (i have no wifi at work but would like it on at home, any suggestions?)
Should I be upgrading the SD card to some other type?
I never used battery monitoring tools until today. I've installed 'current widget' and it shows 4-6ma of usage when sleeping.
Battery E.T.A. app shows 10hrs of life .. is this normal?
I'm almost at the point of selling this phone because of the insanely short battery life..
Click to expand...
Click to collapse
Your current widget shows that the battery should last really long. With 4-6maH, u should drain battery at an approx rate of 1% per hour. But since your battery doesnt last that long even after that, seems your battery is too old and is going to die soon.
I will suggest you to flash the stock win 6.5 rom, see the battery drain, if it lasts for 10hrs or so, go and get and new battery.

kundanjuit said:
Your current widget shows that the battery should last really long. With 4-6maH, u should drain battery at an approx rate of 1% per hour. But since your battery doesnt last that long even after that, seems your battery is too old and is going to die soon.
I will suggest you to flash the stock win 6.5 rom, see the battery drain, if it lasts for 10hrs or so, go and get and new battery.
Click to expand...
Click to collapse
Ok, I'll see how it performs for next two days. Then try a different battery. Odd thing is. I have two batteries, neither seemed to last any longer than the other.
I checked this one is a bb81100 1350mAh/3.7v.
Any recommended battery for this phone? Ebay safe?

Ravi Shanghavi said:
Ok, I'll see how it performs for next two days. Then try a different battery. Odd thing is. I have two batteries, neither seemed to last any longer than the other.
I checked this one is a bb81100 1350mAh/3.7v.
Any recommended battery for this phone? Ebay safe?
Click to expand...
Click to collapse
Hey
Try enabling the Log file & Log applications in current widget settings, then check the log after a few hours to see if, or how often, your mA spikes above 300-400mA (in standby), then try to figure if any apps you have installed are causing this spikes/ drain.
its a bit of work, but it has helped me in the past identify a 'problem' app

There might be a chance that some other app is eating up your battery.... enable app logs in current widget and check the log if any app has high battery usage...
Sent from my HTC HD2 using XDA App

Ok, this is quite surprising. I've gotten 13hrs and it says 40% battery left..
I've enabled logging as recommended. But these logs aren't exactly fun to look at. I don't understand why they wouldn't give you an option to pull the core android apps out of the logging.. or some sorta filter tool. ugh
the one thing I uninstalled was the antivirus program that was on my phone. Well along with the firmware update. I can deal with 13hrs of battery.. it was the six hours or 7-8hrs that was annoying as all heck. So if this really does last another 5-10hrs for a total of 20+hrs I'll be super stoked. I barely use my phone.. no games. nothing. It just sits on standby for 3-5calls a day.. and perhaps 20emails/rss feed checks.

Hi,
Kind of a noob question, but how do you enable Log file & Log applications?
I'm running the same ROM and getting 10 hours on a full charge, I used to get much more on the previous Froyo NAND ROM I was running.
In standby, sometimes it gets as low as 3mA however sometimes it spikes as high as 100-250 mA while in standby.
I'm guessing its an app or widget that is causing this (although I pretty much have the same ones as I was using in the previous ROM)

goatboy6 said:
Hi,
Kind of a noob question, but how do you enable Log file & Log applications?
I'm running the same ROM and getting 10 hours on a full charge, I used to get much more on the previous Froyo NAND ROM I was running.
In standby, sometimes it gets as low as 3mA however sometimes it spikes as high as 100-250 mA while in standby.
I'm guessing its an app or widget that is causing this (although I pretty much have the same ones as I was using in the previous ROM)
Click to expand...
Click to collapse
Open Current Widget settings...Tick d boxes beside "Log file" & "Log Applications"...Set ur update intervals (i usually use 300secs= 5 mins)...Let ur phone sit in standby for about 2 hrs then re-open current widget...Tap "View Log" to view the logs with d default or ur favorite viewer.

Deleted..sorry

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I prefer Battery Monitor Widget instead of Current Widget. Hard to explain the differences but you'll know when you try it.
At 4-6mA standby your phone should go for more than 2 days.
Edit: Add screenshot. Even says 3 days.

[Q] 15 - 20% battery drain over 8 hours while idle/sleep mode, any ideas?

Hey guys. I just got a Nexus 7 recently (sold used, but "like new", description said it was used briefly for a day and then packed back in the box again). It was working really well until I flashed this kernel. I had CM10.1 on it for a while and flashed that kernel so I could use CIFS.
After I tried this, I saw the the battery had gone from around 75% to 55% one night (over 8 hours). This is much worse than it was before, where it would only drain around 3%, or at most 5%.
I understand that my issue is probably simple: Just flash a different/old kernel or a new ROM and see if it helps. But I was wondering if there's a way to see specifically what is draining the battery. I tried getting Battery Analyzer, but says that "android keyboard" uses the most CPU, and the actual battery settings says, other than the screen, that "Media Server" is using 8% of the battery, as well as System Idle or something.
I don't know what this means exactly. But I do want to know a couple of things:
1. How can I know for sure what is causing the battery drain. Is there any way to figure it out?
2. How can I troubleshoot this, that is, I want to try disabling features and seeing how much the battery drains after that.
In the mean time, I'm gonna flash a different ROM and I'm sure that'll fix it for now. But I'll have a NAND backup just in case.

http://forum.xda-developers.com/showthread.php?t=1179809
Install. Follow directions. Post log as an attachment into their thread asking for help.
High loss while idle implies wakelocks and possibly CPU activity.

I actually found this before and tried it. It showed something with Google+ being highest with partial wakelocks, though I didn't fully understand it. I ended up removing the G+ widget from my home screen on a whim and it seemed to help a lot, only reduced 3% over 8 hours. I'd like to improve even that if possible, but that's how it was when I got it, so I'm really pleased with that. And hopefully it's not a fluke, I'll have to see what happens another night.
Thanks anyway. I'll monitor it more and see if there's anything else I can do.

I use System Tuner to set the off-screen CPU max to 384, seems to help a lot.
ES-5000 said:
I actually found this before and tried it. It showed something with Google+ being highest with partial wakelocks, though I didn't fully understand it. I ended up removing the G+ widget from my home screen on a whim and it seemed to help a lot, only reduced 3% over 8 hours. I'd like to improve even that if possible, but that's how it was when I got it, so I'm really pleased with that. And hopefully it's not a fluke, I'll have to see what happens another night.
Thanks anyway. I'll monitor it more and see if there's anything else I can do.
Click to expand...
Click to collapse

go to recovery mod__ try clear battery status etc..

ghao said:
go to recovery mod__ try clear battery status etc..
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Click to collapse
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May have well just have told him to only touch his tablet on even numbered dates and to only charge it face down on an espresso colored end table. They have the same effect on battery charge and indication that wiping battery stats does. The myth of wiping battery stats was clearly and concisely given an official debunking about a year and a half ago. If anything, wiping battery stats will hinder the OP, not help.

ghao said:
go to recovery mod__ try clear battery status etc..
Click to expand...
Click to collapse
And how am I suppose to do that???

ashik992 said:
And how am I suppose to do that???
Click to expand...
Click to collapse
It's not important, as it does nothing for battery life.

ES-5000 said:
Hey guys. I just got a Nexus 7 recently (sold used, but "like new", description said it was used briefly for a day and then packed back in the box again). It was working really well until I flashed this kernel. I had CM10.1 on it for a while and flashed that kernel so I could use CIFS.
After I tried this, I saw the the battery had gone from around 75% to 55% one night (over 8 hours). This is much worse than it was before, where it would only drain around 3%, or at most 5%.
I understand that my issue is probably simple: Just flash a different/old kernel or a new ROM and see if it helps. But I was wondering if there's a way to see specifically what is draining the battery. I tried getting Battery Analyzer, but says that "android keyboard" uses the most CPU, and the actual battery settings says, other than the screen, that "Media Server" is using 8% of the battery, as well as System Idle or something.
I don't know what this means exactly. But I do want to know a couple of things:
1. How can I know for sure what is causing the battery drain. Is there any way to figure it out?
2. How can I troubleshoot this, that is, I want to try disabling features and seeing how much the battery drains after that.
In the mean time, I'm gonna flash a different ROM and I'm sure that'll fix it for now. But I'll have a NAND backup just in case.
Click to expand...
Click to collapse
Try turning off the daydream. Though it shouldn't be the problem. and please attach the screen shot of your battery usage it may help us to find out what's wrong.

Install cpu spy app frm playstore nd chk ur mobile is getting deep sleep mode or not....!!
Sent from my LG-E975 using xda premium

[Q] Big battery drain - invisible wakelocks

On stock rom I noticed that I have some wakelocks when device doesn´t go to sleep for hours. I wake lock detector I can ´t see any app (including system) that has more than one minute wake time but overall wake could be 3 hours.
So it ´s not app, it´s not system app, I also changed kernel, reboot phone many times and drain is still here.

once its awakened. it stays awake like 10 seconds. you can check how many times.
also you can check betterbatterystats. I like it better as it distinguishes kernel and partial wakelocks
Sent from my LG-D802 using xda app-developers app

solvd
If ur on stock rom do full wipe and it will fix all ur problems

I tried everything but can t find what wakes device. I know only that phone is waked for 40 minutes with 7 minutes screen time but it isnt caused by any app.

screenshots, and use xustom reference point
Sent from my LG-D802 using xda app-developers app

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I prefer BBS for the finer details. You sir, have a rouge app or service.

Tried to freeze all new apps but still there is waking. Waking detector and gsam aren t showing any rogue app.
I suppose that Held wake time shouldn t be longer than screen time, or?

I would be over the moon to have battery life like that, 1h20 screen on time in 10 hours and still at 79%. I get nowhere near that...

You should check the "App usage" section to see what app or service is displaying high cpu usage and look at the details for that app or service to identify the wakelock.
I suspect the issue is network related. But I may be wrong...

I'd back stuff up and whack the phone with a factory reset. But that's just me, I'm a bit psycho like that
cjason said:
I suspect the issue is network related. But I may be wrong...
Click to expand...
Click to collapse
Definitely possible. OP should try disabling fast dormancy (and MLT while he's at it).
ldorbin said:
I would be over the moon to have battery life like that, 1h20 screen on time in 10 hours and still at 79%. I get nowhere near that...
Click to expand...
Click to collapse
The main problem here is that in 10+ hours on battery, the phone is awake for over 6 hours. I don't think that's normal.

I did many clean installs and factory resets but there is something more. On PA kitkat rom I don t have wakelocks like this even with same apps.
Odoslané z Nexus 7 pomocou Tapatalku

kapybarus said:
I did many clean installs and factory resets but there is something more. On PA kitkat rom I don t have wakelocks like this even with same apps.
Odoslané z Nexus 7 pomocou Tapatalku
Click to expand...
Click to collapse
try to go to a flex rom. if you like stock then that's close to stock but i havent seen any unwanted wake locks on the couple i have tried. i have a d800 with aeonflex and furnace kernel. when the screen turns off it literally uses no battery.

Same on flex. In fact flex rom was first rom which brought me to constant rom changing, reseting and testing where is problem. I am really desperate. Last thing which i can try is flashing maybe 10c or 10 a
Odoslané z Nexus 7 pomocou Tapatalku

robogo1982 said:
The main problem here is that in 10+ hours on battery, the phone is awake for over 6 hours. I don't think that's normal.
Click to expand...
Click to collapse
Well, we don't know what was running behind, but with basic logical thinking 6hrs awake on 10+ hrs overall, we do expect ton of battery drop, right?
Here's my case, from 100%, fully charge, 2 minutes on call, 8 minutes screen-on time, what do you expect to see my battery level after 8 hours with 1% wake (meaning 99% sleep)? Ans: 51%. So how could it be 49% drop when only 1% wake? BBS, WLD found NOTHING.
What did I do next? Reboot the phone and I got 10x better on battery. Weird, indeed.

Maybe this will be helpful?
Click to expand...
Click to collapse

@kapybarus go to dialer, type 3845#*802#, go to Settings, Fast dormancy mode and disable it. While you're there, go to MLT test and disable that too. Reboot the phone and see if you'll have more wakelocks by system/radio like that.
Most likely you have fast dormancy enabled while your network does not support it.

robogo1982 said:
@kapybarus go to dialer, type 3845#*802#, go to Settings, Fast dormancy mode and disable it. While you're there, go to MLT test and disable that too. Reboot the phone and see if you'll have more wakelocks by system/radio like that.
Most likely you have fast dormancy enabled while your network does not support it.
Click to expand...
Click to collapse
Thanks, for now wakelocks are gone, hope it will persist. It is possible that these wakelocks starts when I changed provider few weeks ago.
I read that disabling fast dormacy is not good for battery (when provider supports fast dormacy) so should I switch to my previous provider if there were no problem?

If your provider does not support fast dormancy, it's better to disable it on the phone. If it does support it, it's better to turn it on. Fast dormancy itself is an efficient system, but if it's not available on your network, your phone will generate wakelocks trying to work with fast dormancy states and receiving no response.
Let us know if the situation changes

yeah try betterbatterystats, look into kernel and partial wakelocks
Sent from my g2 using xda app-developers app

Moto X 1st Gen Battery issue.

I've been experiencing serious battery drain lately.
Lasts around 6 hours tops.
Check out the stats. Anyone know how to prevent this?
Drain is almost 3:40 min / 1% discharge. 
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Check if your phone turns off the display after the display timeout. I have seen this happen in Moto X sometimes.. It just stays awake. Restart fixes it.
How about brightness? Set it in Auto Brightness mode. Check your Settings->Display page and check all the fields. Apart from that Screen taking 38% is surprising.
rishi.gohil said:
I've been experiencing serious battery drain lately.
Lasts around 6 hours tops.
Check out the stats. Anyone know how to prevent this?
Drain is almost 3:40 min / 1% discharge. 
Click to expand...
Click to collapse

I've been having the same problem. I updated a bunch of apps yesterday, (mostly Google apps) and it the battery seems to be better today. It may be too early to tell, but I'm hoping it was one of the Google apps that draining the battery and that it was corrected with the update.

Glad to see I'm not the only one who's battery suddenly got a lot worse. I thought it was Snapchat since I had started using it recently, but the battery usage page doesn't reflect that.

One thing to check is the awake time. If you notice that your device seems to be awake all the time, I'm willing to bet that it has to do with google play services.
If rooted, there is an easy fix via gservices app on market.
Sent from my Moto X using XDA Free mobile app

I'm having the same issue. Really only getting about an hour of screen time these days. When I first got the phone it was 2+ hours. Mostly use WiFi vs cellular for data, which I thought should be more battery friendly. I make sure I don't have apps running... I'm thinking maybe my battery has just been getting weaker over time.
Here's a good read on battery wear http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
If you charge once a day like everyone the battery decreases by 15% after a year.

soxfan37 said:
I've been having the same problem. I updated a bunch of apps yesterday, (mostly Google apps) and it the battery seems to be better today. It may be too early to tell, but I'm hoping it was one of the Google apps that draining the battery and that it was corrected with the update.
Click to expand...
Click to collapse
I downloaded the gapps fixer from the Play Store but after installing it and rebooting I could no longer send e-mails via the gmail app (clicking the "send" icon would do nothing)

guruzen said:
Check if your phone turns off the display after the display timeout. I have seen this happen in Moto X sometimes.. It just stays awake. Restart fixes it.
How about brightness? Set it in Auto Brightness mode. Check your Settings->Display page and check all the fields. Apart from that Screen taking 38% is surprising.
Click to expand...
Click to collapse
Brightness is already set to auto. Also, I've check the settings and display page. Its as it should. I wiped out cache partition and it improved a little. Though I didn't saw significant change by doing that. It still runs for max 6-7 hours. That's it.

have you tried to clean battery stats from recovery?

eldar4uk said:
have you tried to clean battery stats from recovery?
Click to expand...
Click to collapse
Doesn't actually do anything. People need to stop facilitating this dumb myth.
Google said:
This file [batterystats.bin] is used to maintain, across reboots, low-level data about the kinds of operations the device and your apps are doing between battery changes. That is, it is solely used to compute the blame for battery usage shown in the "Battery Use" UI in settings. That is, it has deeply significant things like "app X held a wake lock for 2 minutes" and "the screen was on at 60% brightness for 10 minutes."
It has no impact on the current battery level shown to you. It has no impact on your battery life.
Click to expand...
Click to collapse

rishi.gohil said:
Brightness is already set to auto. Also, I've check the settings and display page. Its as it should. I wiped out cache partition and it improved a little. Though I didn't saw significant change by doing that. It still runs for max 6-7 hours. That's it.
Click to expand...
Click to collapse
May be u need to calibrate your battery. Try to put the phone in charge and let it reach 100% and post that dont remove the charger for 4-5 hours. This is a method to calibrate. Try this and lets see if it helps.
And, I see that you are in H+.. Try using your phone in 2G for a day and observe the battery patterns.

You should clean battery stats from recovery.. Have you tried this?

Mine will drain fast but then it will sit at 1% for several hours before finally shutting off. I have not found a fix and it's been going on for a few months now.

SmokeyDP said:
Mine will drain fast but then it will sit at 1% for several hours before finally shutting off. I have not found a fix and it's been going on for a few months now.
Click to expand...
Click to collapse
u let the battery die out then recharge to full without switching it on. Once complete boot the phone and when booting is complete then remove the charging cable.

Overnight battery drain

I have a problem that I noticed some people are experiencing. Overnight idle the phone drains like 25% with wifi off and on battery saver. Is there a known cause for this? My Honor 8 is brand new. Help!
Edit - When I go to sleep -
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After I wake up it's normal again (I turn WiFi on and use phone normally) -
I will try and leave WiFi on during the night today to see if it makes any difference.

Fyi, since I woke up and turned wifi on, the battery has only went down by 1%! Something is not right. How can it drain so much without using it and almost none when I actually use it.
Screenshot from today (from 1pm till 7pm, only lost 2%)
i.imgur.com/xLBcILO.png

Which hardware and firmware version are you using?
Do you have cellular data connected when WiFi is off?
Does the battery graph show constant system awake time during these periods of high drain?

PuffDaddy_d said:
Which hardware and firmware version are you using?
Do you have cellular data connected when WiFi is off?
Does the battery graph show constant system awake time during these periods of high drain?
Click to expand...
Click to collapse
Hi. I'm using FRD-L09 and EMUI 5, build FRD-L09C432B381.
No wifi, no mobile data turned on. All apps closed.
Yesterday I left it at ultra power save when it was at 12%, after I woke up (around 6 hours). it was off. Don't think that's normal either.

Sometimes I have the same problem. Overnight phone drops 25% of the battery.
What I found useful is to turn off Wifi+, Link+ and in GPS location (3 dots -> Search settings -> turn off Searching for Wifi and Bluetooth). In fact that will stops searching for Wifi, while Wifi is toogled off.
It might help you, I think this is Android 7 issue, since most people complains about heavy battery drain when not using the phone. Noone complained when using Android 6.

This isn't normal, but at the same time it is... I don't think any one person has figured out the real reason why, but many of us have had similar battery drain for seemingly no reason. I simply backed up my data and factory reset the phone and haven't had an issue since. Others haven't been so lucky.
Can you take a screen shot of your battery graph so we can see if your system is awake during the drain?

I have update B381 and u have this problem with battery drain for my is very bad battery life update B360 was good for battery life.

I found the high Idle battery usage some what related to the phone keep search for upgrade and the process "android OS" was consuming around 50% all the time.
After set these two setting, it fixed the battery drain and "android OS" only use around 20%. Now it remains 100% battery for 10 hours standby.
1) Setting->System update ->(three dots)->Update Settings->Wifi auto download (Disable)
2) Setting->Battery->(Setting icon on top right)->keep wifi on when sleeping->Never

I did as everyone suggested and turned off auto WiFi and bluetooth search and auto WiFi download of the system updates. If I turn off keep WiFi on during sleep, I don't get any notifications from messaging apps, so I won't do that. I've also only left Messenger, Viber and Whatsapp in the whitelist of programs that will be closed when screen is locked.
Here is the most recent screenshot of the battery usage.

Try factory reset and wipe cache. Screenshot tells us that your phone is awake when you are not using it.

Okay, I'll try later tonight and reply tomorrow if anything's changed.
p.s. Any good full backup apps?

Re7r0re7r0 said:
Okay, I'll try later tonight and reply tomorrow if anything's changed.
p.s. Any good full backup apps?
Click to expand...
Click to collapse
Just use the backup tool that was loaded on the phone. It works nearly perfectly to backup all your texts, call log, apps, settings, etc.
---------- Post added at 08:55 AM ---------- Previous post was at 08:52 AM ----------
Re7r0re7r0 said:
I did as everyone suggested and turned off auto WiFi and bluetooth search and auto WiFi download of the system updates. If I turn off keep WiFi on during sleep, I don't get any notifications from messaging apps, so I won't do that. I've also only left Messenger, Viber and Whatsapp in the whitelist of programs that will be closed when screen is locked.
Here is the most recent screenshot of the battery usage.
Click to expand...
Click to collapse
Looks like it tried to sleep when you went to bed last night, but something woke it up early in the morning and it never went back to sleep. Find out what that was and you may solve your problem.

If you have data, you still get notifications.
Re7r0re7r0 said:
I did as everyone suggested and turned off auto WiFi and bluetooth search and auto WiFi download of the system updates. If I turn off keep WiFi on during sleep, I don't get any notifications from messaging apps, so I won't do that. I've also only left Messenger, Viber and Whatsapp in the whitelist of programs that will be closed when screen is locked.
Here is the most recent screenshot of the battery usage.
Click to expand...
Click to collapse

As a test, I created a Magisk module that freezes all of Huawei's system power management apps and superfluous services. I just loaded it today, so it'll be a few days before I can provide feedback on if it improves battery life.

I backed it all up and am wiping it tonight but I was thinking. Perhaps it's not a good idea to restore the data yet? Maybe I should try a night with stock settings/apps to see if that makes a difference, then restore all and see if there's any difference.

Re7r0re7r0 said:
I backed it all up and am wiping it tonight but I was thinking. Perhaps it's not a good idea to restore the data yet? Maybe I should try a night with stock settings/apps to see if that makes a difference, then restore all and see if there's any difference.
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Honestly, I wouldn't expect that experiment to provide you with any useful info. You will naturally see more battery drain once you have your apps and services running because more will be happening in the background. Reinstall everything and use your device normally to get the most accurate comparison to your previous battery life.

netvorCZEK said:
Try factory reset and wipe cache. Screenshot tells us that your phone is awake when you are not using it.
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Factory reset I know how to do, but how to give the wipe cache?

IIRC, the cache should be wiped automatically when you Factory Reset.

I like to do it manually. Turn off the phone. Hold Vol + and power button.

I wonder how the battery drain overnight will be with the new custom Roms which are out.